drop table if exists t1;
set names utf8;
show variables like 'character_sets_dir%';
Variable_name	Value
character_sets_dir	MYSQL_TEST_DIR/std_data/
show collation like 'utf8_test_ci';
Collation	Charset	Id	Default	Compiled	Sortlen
utf8_test_ci	utf8	240			8
create table t1 (c1 char(1) character set utf8 collate utf8_test_ci);
insert into t1 values ('a');
select * from t1 where c1='b';
c1
a
drop table t1;
show collation like 'ucs2_test_ci';
Collation	Charset	Id	Default	Compiled	Sortlen
ucs2_test_ci	ucs2	241			8
create table t1 (c1 char(1) character set ucs2 collate ucs2_test_ci);
insert into t1 values ('a');
select * from t1 where c1='b';
c1
a
drop table t1;
show collation like 'ucs2_vn_ci';
Collation	Charset	Id	Default	Compiled	Sortlen
ucs2_vn_ci	ucs2	242			8
create table t1 (c1 char(1) character set ucs2 collate ucs2_vn_ci);
insert into t1 values (0x0061),(0x0041),(0x00E0),(0x00C0),(0x1EA3),(0x1EA2),
(0x00E3),(0x00C3),(0x00E1),(0x00C1),(0x1EA1),(0x1EA0);
insert into t1 values (0x0103),(0x0102),(0x1EB1),(0x1EB0),(0x1EB3),(0x1EB2),
(0x1EB5),(0x1EB4),(0x1EAF),(0x1EAE),(0x1EB7),(0x1EB6);
insert into t1 values (0x00E2),(0x00C2),(0x1EA7),(0x1EA6),(0x1EA9),(0x1EA8),
(0x1EAB),(0x1EAA),(0x1EA5),(0x1EA4),(0x1EAD),(0x1EAC);
insert into t1 values ('b'),('B'),('c'),('C');
insert into t1 values ('d'),('D'),(0x0111),(0x0110);
insert into t1 values (0x0065),(0x0045),(0x00E8),(0x00C8),(0x1EBB),(0x1EBA),
(0x1EBD),(0x1EBC),(0x00E9),(0x00C9),(0x1EB9),(0x1EB8);
insert into t1 values (0x00EA),(0x00CA),(0x1EC1),(0x1EC0),(0x1EC3),(0x1EC2),
(0x1EC5),(0x1EC4),(0x1EBF),(0x1EBE),(0x1EC7),(0x1EC6);
insert into t1 values ('g'),('G'),('h'),('H');
insert into t1 values (0x0069),(0x0049),(0x00EC),(0x00CC),(0x1EC9),(0x1EC8),
(0x0129),(0x0128),(0x00ED),(0x00CD),(0x1ECB),(0x1ECA);
insert into t1 values ('k'),('K'),('l'),('L'),('m'),('M');
insert into t1 values (0x006F),(0x004F),(0x00F2),(0x00D2),(0x1ECF),(0x1ECE),
(0x00F5),(0x00D5),(0x00F3),(0x00D3),(0x1ECD),(0x1ECC);
insert into t1 values (0x00F4),(0x00D4),(0x1ED3),(0x1ED2),(0x1ED5),(0x1ED4),
(0x1ED7),(0x1ED6),(0x1ED1),(0x1ED0),(0x1ED9),(0x1ED8);
insert into t1 values (0x01A1),(0x01A0),(0x1EDD),(0x1EDC),(0x1EDF),(0x1EDE),
(0x1EE1),(0x1EE0),(0x1EDB),(0x1EDA),(0x1EE3),(0x1EE2);
insert into t1 values ('p'),('P'),('q'),('Q'),('r'),('R'),('s'),('S'),('t'),('T');
insert into t1 values (0x0075),(0x0055),(0x00F9),(0x00D9),(0x1EE7),(0x1EE6),
(0x0169),(0x0168),(0x00FA),(0x00DA),(0x1EE5),(0x1EE4);
insert into t1 values (0x01B0),(0x01AF),(0x1EEB),(0x1EEA),(0x1EED),(0x1EEC),
(0x1EEF),(0x1EEE),(0x1EE9),(0x1EE8),(0x1EF1),(0x1EF0);
insert into t1 values ('v'),('V'),('x'),('X');
insert into t1 values (0x0079),(0x0059),(0x1EF3),(0x1EF2),(0x1EF7),(0x1EF6),
(0x1EF9),(0x1EF8),(0x00FD),(0x00DD),(0x1EF5),(0x1EF4);
select hex(c1) as h, c1 from t1 order by c1, h;
h	c1
0041	A
0061	a
00C0	À
00C1	Á
00C3	Ã
00E0	à
00E1	á
00E3	ã
1EA0	Ạ
1EA1	ạ
1EA2	Ả
1EA3	ả
0102	Ă
0103	ă
1EAE	Ắ
1EAF	ắ
1EB0	Ằ
1EB1	ằ
1EB2	Ẳ
1EB3	ẳ
1EB4	Ẵ
1EB5	ẵ
1EB6	Ặ
1EB7	ặ
00C2	Â
00E2	â
1EA4	Ấ
1EA5	ấ
1EA6	Ầ
1EA7	ầ
1EA8	Ẩ
1EA9	ẩ
1EAA	Ẫ
1EAB	ẫ
1EAC	Ậ
1EAD	ậ
0042	B
0062	b
0043	C
0063	c
0044	D
0064	d
0110	Đ
0111	đ
0045	E
0065	e
00C8	È
00C9	É
00E8	è
00E9	é
1EB8	Ẹ
1EB9	ẹ
1EBA	Ẻ
1EBB	ẻ
1EBC	Ẽ
1EBD	ẽ
00CA	Ê
00EA	ê
1EBE	Ế
1EBF	ế
1EC0	Ề
1EC1	ề
1EC2	Ể
1EC3	ể
1EC4	Ễ
1EC5	ễ
1EC6	Ệ
1EC7	ệ
0047	G
0067	g
0048	H
0068	h
0049	I
0069	i
00CC	Ì
00CD	Í
00EC	ì
00ED	í
0128	Ĩ
0129	ĩ
1EC8	Ỉ
1EC9	ỉ
1ECA	Ị
1ECB	ị
004B	K
006B	k
004C	L
006C	l
004D	M
006D	m
004F	O
006F	o
00D2	Ò
00D3	Ó
00D5	Õ
00F2	ò
00F3	ó
00F5	õ
1ECC	Ọ
1ECD	ọ
1ECE	Ỏ
1ECF	ỏ
00D4	Ô
00F4	ô
1ED0	Ố
1ED1	ố
1ED2	Ồ
1ED3	ồ
1ED4	Ổ
1ED5	ổ
1ED6	Ỗ
1ED7	ỗ
1ED8	Ộ
1ED9	ộ
01A0	Ơ
01A1	ơ
1EDA	Ớ
1EDB	ớ
1EDC	Ờ
1EDD	ờ
1EDE	Ở
1EDF	ở
1EE0	Ỡ
1EE1	ỡ
1EE2	Ợ
1EE3	ợ
0050	P
0070	p
0051	Q
0071	q
0052	R
0072	r
0053	S
0073	s
0054	T
0074	t
0055	U
0075	u
00D9	Ù
00DA	Ú
00F9	ù
00FA	ú
0168	Ũ
0169	ũ
1EE4	Ụ
1EE5	ụ
1EE6	Ủ
1EE7	ủ
01AF	Ư
01B0	ư
1EE8	Ứ
1EE9	ứ
1EEA	Ừ
1EEB	ừ
1EEC	Ử
1EED	ử
1EEE	Ữ
1EEF	ữ
1EF0	Ự
1EF1	ự
0056	V
0076	v
0058	X
0078	x
0059	Y
0079	y
00DD	Ý
00FD	ý
1EF2	Ỳ
1EF3	ỳ
1EF4	Ỵ
1EF5	ỵ
1EF6	Ỷ
1EF7	ỷ
1EF8	Ỹ
1EF9	ỹ
select group_concat(hex(c1) order by hex(c1)) from t1 group by c1;
group_concat(hex(c1) order by hex(c1))
0041,0061,00C0,00C1,00C3,00E0,00E1,00E3,1EA0,1EA1,1EA2,1EA3
0102,0103,1EAE,1EAF,1EB0,1EB1,1EB2,1EB3,1EB4,1EB5,1EB6,1EB7
00C2,00E2,1EA4,1EA5,1EA6,1EA7,1EA8,1EA9,1EAA,1EAB,1EAC,1EAD
0042,0062
0043,0063
0044,0064
0110,0111
0045,0065,00C8,00C9,00E8,00E9,1EB8,1EB9,1EBA,1EBB,1EBC,1EBD
00CA,00EA,1EBE,1EBF,1EC0,1EC1,1EC2,1EC3,1EC4,1EC5,1EC6,1EC7
0047,0067
0048,0068
0049,0069,00CC,00CD,00EC,00ED,0128,0129,1EC8,1EC9,1ECA,1ECB
004B,006B
004C,006C
004D,006D
004F,006F,00D2,00D3,00D5,00F2,00F3,00F5,1ECC,1ECD,1ECE,1ECF
00D4,00F4,1ED0,1ED1,1ED2,1ED3,1ED4,1ED5,1ED6,1ED7,1ED8,1ED9
01A0,01A1,1EDA,1EDB,1EDC,1EDD,1EDE,1EDF,1EE0,1EE1,1EE2,1EE3
0050,0070
0051,0071
0052,0072
0053,0073
0054,0074
0055,0075,00D9,00DA,00F9,00FA,0168,0169,1EE4,1EE5,1EE6,1EE7
01AF,01B0,1EE8,1EE9,1EEA,1EEB,1EEC,1EED,1EEE,1EEF,1EF0,1EF1
0056,0076
0058,0078
0059,0079,00DD,00FD,1EF2,1EF3,1EF4,1EF5,1EF6,1EF7,1EF8,1EF9
select group_concat(c1 order by hex(c1) SEPARATOR '') from t1 group by c1;
group_concat(c1 order by hex(c1) SEPARATOR '')
AaÀÁÃàáãẠạẢả
ĂăẮắẰằẲẳẴẵẶặ
ÂâẤấẦầẨẩẪẫẬậ
Bb
Cc
Dd
Đđ
EeÈÉèéẸẹẺẻẼẽ
ÊêẾếỀềỂểỄễỆệ
Gg
Hh
IiÌÍìíĨĩỈỉỊị
Kk
Ll
Mm
OoÒÓÕòóõỌọỎỏ
ÔôỐốỒồỔổỖỗỘộ
ƠơỚớỜờỞởỠỡỢợ
Pp
Qq
Rr
Ss
Tt
UuÙÚùúŨũỤụỦủ
ƯưỨứỪừỬửỮữỰự
Vv
Xx
YyÝýỲỳỴỵỶỷỸỹ
drop table t1;